Meta

History Quantitative transcriptome data for the malaria-transmitting mosquito Anopheles gambiae covers a broad range of biological and experimental conditions including development blood feeding and infection. to known biological events such as egg production are revealed. Many individual gene clusters (nodes) on the map are highly enriched in biological and molecular functions such as protein synthesis protein degradation and DNA replication. Gene families such as odorant binding proteins can be classified into distinct functional groups based on their expression and evolutionary history. Immunity-related genes are non-randomly distributed in several distinct regions on the map and are generally distant from genes with house-keeping roles. Each immunity-rich MK-4305 region appears to represent a distinct biological context for pathogen recognition and clearance (e.g. the humoral and gut epithelial responses). Several immunity gene families such as for Rabbit Polyclonal to HNRCL. example peptidoglycan recognition protein (PGRPs) and defensins look like specialised for these specific tasks while three genes with literally interacting protein items (LRIM1/APL1C/TEP1) are located in close closeness. Conclusions The map supplies the 1st genome-scale multi-experiment summary of gene manifestation in A. gambiae and ought to be useful in the gene-level for looking into potential interactions also. A web user interface is obtainable through the VectorBase site http://www.vectorbase.org/. It really is updated while new experimental data becomes available regularly. MK-4305 History Genome sequencing [1] and gene manifestation microarray technologies possess lately MK-4305 MK-4305 enabled systems-level study in to the malaria-transmitting mosquito Anopheles gambiae. By calculating transcript levels regarding natural events such as for example blood feeding advancement parasite disease and mating you can determine genes that will tend to be mixed up in root processes. However because of the prosperity of information made by specific tests and the many leads that want further investigation it really is understandable that study groups hardly ever perform so-called meta-analysis of gene manifestation data whereby multiple tests are analysed concurrently. Furthermore meta-analysis is impeded by incompatibilities between different versions of genome annotations microarray technologies file formats experimental designs data processing pipelines and statistical analyses. Several ongoing projects are aiming to eliminate these inconsistencies and produce uniform processed and analysed data for the MK-4305 end user. Human curators at the two major microarray repositories NCBI GEO [2] and Array Express [3] are working to produce enriched resources known as GEO Datasets and the Gene Expression Atlas [4] respectively. The VectorBase consortium [5] produces a similar unified gene expression resource for the invertebrate vector community. Web-based expression summaries provide useful and concise biological overviews for individual genes of interest however a common requirement is to know which other genes are expressed in a similar manner to a particular gene. GEO and ArrayExpress’ curated expression resources provide such “nearest neighbour” gene lists but within a single experiment only not across multiple experiments. Some years ago gene expression data from 553 Caenorhabditis elegans two-colour microarray experiments was clustered simultaneously to produce a 2D map known as TopoMap [6]. It was found that TopoMap clustered many genes of similar function such as lipid metabolism heat shock and neuronal genes. TopoMap is integrated into the WormBase genomics resource but the underlying expression data is not available reducing its utility. To the best of our knowledge no large-scale meta-analysis of expression data has been made MK-4305 public for any other species. Here we present a simple method for clustering expression data from a diverse set of microarray experiments. We have used data from A. gambiae but the method is applicable to any organism. The results are visualised on a 2D map and we show that many regions of the map are strongly linked to biological function. Two case.